Improvement in sewing-machines



W. HUNT.

Sewing Machine.

Patented June 27, 1854.

UNITED V STATES PATENT OFFIC WALTER HUNT, on NEW yon-K, n. Y.

IMPROVEMENT IN SE I G- ACHINES.-

Specification forming part of Letters Patent No; 11,161; a t Jun 2%}85 5 To .fI/ZZ'ZU h OITI/TH/(LZ/ concern.- r

Be it known that I, WA TER -HUNT, of the city, county, and State'of NewJYprk, have invented certainnew and useful Improvements in Sewing-Machines, of which the following is constructed on said improved plan, the same 1 letters of reference indicating the same. parts throughout.

f Figure 1 is a sectional side elevation, Fig. 2 top,and Fig. 3 an open front end elevation, of the machine and its partsin their order of connection andarrangement. side and front views of the needle and stock detached. Figs. 6 and 7 are front elevations v of the same, connected with the slide. Figs.

9 and 10 exhibit the position of the shuttleslide and carrier in connection with the shuttle when the motion is given'either way. Figs. 9 and 10 also show two positions ,of the needle;

The following'is a minute description of the construction, arrangement, and operation of said machine, the drawings of which are about the full size of the smallest working model.

Fig. llis a side view of the cam-wh'eel, and- Fig. 12a front view of the same.

The driving or cam wheel A, Fig. 11, is discous in its form and about oneinch thick;

Upon its periphery is a projecting pin or continuous early-'13, Fig. 2, which crosses the rim of the wheel twice at opposite sides of the periphery, leaving nearly one-half of the pin projecting radially in a straight line from opposite sides of the rim. This continuous cam B traverses in anotch cut'in the upper end of a vertical limb, (shown in-Fig. 3,) which forms a part-of the rock-shaft D, which is therebymovcd forth and back at each revolution of the cam-wheel A., At the opposite end of l) is an elevated limb, E, (see Fig. 1,) which extends upward and enters into a lon gitudinal slot in. the under corner of the slide race F in Figs. 3 and S, and fits into a gap in the slide G at H, thus giving motion to the shuttle l by means of the shuttle-carrier I, the ends of which alternately enter cavities J J in arotarytableor platform, upon Figs. 4, 5 are enlarged vertical tube, open in front, in which directly over the center of r in "and near the ends of K at eachvibrationof the carrier, the'rear endsof which aretripped and. thrown back by. coming in. contact with the back of the needle-guide L (seeFigsfi and 3) at each vibration, sothat one of the ends of 'I is atall times connected'with K. 1 The slide-I race F'is-laterallyconnected with the shuttlerace M, which together are horizontally snp ported at their ends in the frame directly'um vder the table-O. (See Fig. 3.) Through said frame or case of themachine there is an opening, P, in Fig. 1, corresponding with those of the shuttle and "slide races, for the purpose of inserting and withdrawing Gr, the slide, and K, the shuttle, which are disengaged by dropping the end of the rockshaftD, which has a bearing, near E, on a bridge, Q, the end of which is let down or raised and secured by means of a pendulous hook, R, which'engages and disengages the upper end of from the gap H in the slide G. I l Having described the instrumentalities which give motion to theshuttle,I will next consider those which operate the needle.

Upon one'face of the wheel A is an elevated fin or groove, S, Figs. 11 and 12, which, in efleet,,is a continuouscompound eccentric and. concentric cam, on or in which traverses the limb T, Fig. 1, which is connected with or forms the lower end of the needle-arm U, which is here a lever of the first order, having its i'ulcrum at V, which fulcrum has aslight horizontal movement, (in order to disengage its front end from the needle-slide at \V,) and is fixed by the prop q. Y

At the extreme front end of the arm X is a plays the needle-slide a, the table 0. Lengthwise in saidneedle-slide a, Figs. 6 andT, about two-thirds upward from its bottom end, is cut a small groove, in which the needle-stock 6 (containing the needle 0) is inserted and suspended upon the pivot (17, Figs. 4 and 6, which passes through said slide and through near the upper end of Z), upon the extreme upper end of which a slight spring, e, (seoured in the upper portion of said groove,) is made to bear with sufficient force to throw out the lowerend or point of the needle-from'a straight line as far as may be required for taking the longest stitches, which is regulated by a set-screw, f, bearing against theoplposit surface of u. 7 I

the nmb E.

npon an upward-acting spring,

groove. it assumes a verticalposition, =sequentlyyhaving pircedthe cloth to its'cen- ,ter of the line tobe sewed, draws it forward in the direction m vemen Immediately below the point .of the needle, and in a line with the same, is placed the gagej finger g, Figs. land 3, which is secured and regulated bythe set-screw -h in the arm X, The ofiice of said finger is to hold down the cloth or other, material in sewing, ,ithaving a central slot through which the needle passes while themachin'e is in operation. 1 .Upon the under surfaceof thet bleO a slid in'g cap, 4.,is placed, and connected centrally tosaid table by a rivet-washer, j,;; o1-" hub, in

Fig; 2,which forms an axis upon-which 0 may revolve back and forth at ple'asure. The cap ,1 is made to slide horizontally and fasten by mm, of thelength of stitch required. Qflhe cured to "the under ,surfaiee'of 'i;

. Theshuttle K is do ble-po 'ofi sheet inet inward, forming bearings x 4:, (see 8,) in

lateral. or sidewise' movement or. thefneedle which makes the feed produced by means of a hopper-shaped groove,n,'(see Figs. 9 and" 10,) cut vertically or nearly so inthe face of the needle-guide L. The needleh'avihgpasSed through the slot in the finger g, the .cl'othjand the spring-button 1,111 a partially-inclined po-' sition," now enters the groove in t e n e eguide L,vjh ich' is partially inclined the opp'o site .way from the inclination ofthe needle. Consequently, as itdescends down the inclined and con-v and to theextent of 7 its lateral to fix'the length of the stitch,; and 'thefneedle is withdrawn-itrises vertically,

the cloth being held by the spring-buttonvl i inst the finger gs'uflicie'ntly firmto prevent ,itscbeing moved by the needle-spring e,which, however, throws the needle-out in the inclined position as it.-raises its point above the cloth the proper distance for the next stitch "Upon the arm X is placed my tension-fonceps o, Figs. '1 and 2, suspended upon the pin p, through the bite of which at o the threads from the spool s is'passed,the1nee through t, and thence through guidefholesin the cap of theneedle' at t, thence-down in front of said slide" ind throng the eye of the needle atl d.

'The forceps areopera'ted by means oi the connect'ingelinka, hich extends frorn the same tothe needle-arm U, havingthe pins 22 and w l as- 'connecti'ng-joints withthe'same, and by mean's of which-any required tension maybe given tothe need1e thread, i e I intedand made lywith portions of the same bent which, the "ends of the bobbinspindle 3 are heldiwith any required tension,

. From underneath e *eQ'the outer end of which may befixed'upon d. tljietablexO at any're'quir'ed'point,operatingas edge of'the clothimay a gage against which the beplaced while sewing,

seam therebyregulated; ing gage, aflwhich traverses.'in agroove,

and the course of, the

pos'Qfof-stitching circles, curves, &c.

.edfrom thespool through the forceps, as before directed, and thefilled 'bobbininsertedin the shuttle, :with end of the-thread protruded about twojinches through the'shuttle.-eye', .the= I shuttle is taken-in'the right hand and the slide G- in the lefla'.) 1; The back end of the carrier 1 is inserted in the-rear cavity, J. I and K,being thus held, and shuttle races, The bridge Q,-b,eing down, is now raised, (sothat E enters into the gap 11,) and is secured by-the hook worked is now introduce or otherwise) between g and j, (the needle being raised for the purpose.) The machine is nowput in motiortby means of the 'crankj, I

byhand or other power,

as maybe preferred.

1 claim-.--.r.

the guides and ways underneath the same-,. all

arranged-and operating in the manner and for P p es set forth.

- p WALTERHUNT. Witnesses:-. v v

JOHN Rrcirn'iznsox, Y

7'1.- CAMPBELL.

d the back tuner-{til arm X extends a movable gage, Z, having set-'scr'ews 'There'is alsoa slidbe placed for/the Pl11'- v Mode-ofoperationz The need1ebeingthread.-

are inserted together into the slide I It. The cloth to be i d (guided by the hand The .r0tanytaib1'e-t6p,fin combination with 

